I am relatively new to reloading, started in Jan. 13. Up until now have only reloaded for revolvers. I am now trying to reload for my 1911 45 and having problems with bullet setback after chambering. The reload can have an OAL of 1.235 before chambering, after , as low as 1.220 or lower. This is with or without a factory crimp and with as little expansion as possible. Need to figure this out. I am using brass that I bought at a gun show without asking how many times they had been fired.